Fix Windows ERROR macro leakage from startup trace headers

Author: secup

src/gui/main_gui.cpp

@@ -28,6 +28,9 @@
 #define NOMINMAX
 #endif
 #include <windows.h>
+#ifdef ERROR
+#undef ERROR
+#endif
 #endif
 
 namespace {

src/gui/startup_trace.hpp

@@ -10,6 +10,10 @@
 #define NOMINMAX
 #endif
 #include <windows.h>
+// Prevent Windows ERROR macro from corrupting LOG_* macros in translation units
+#ifdef ERROR
+#undef ERROR
+#endif
 #endif
 
 namespace ultra {